Identification of high energy ions using backscattered particles in laser-driven ion acceleration with cluster-gas target

Fukuda, Yuji; Sakaki, Hironao; Kanasaki, Masato; Yogo, Akifumi; Jinno, Satoshi   ; Tampo, Motonobu; Faenov, A.*; Pikuz, T.; Hayashi, Yukio; Kando, Masaki; Pirozhkov, A. S.; Shimomura, Takuya; Kiriyama, Hiromitsu; Kondo, Kiminori; Bulanov, S. V.; Kurashima, Satoshi; Kamiya, Tomihiro; Oda, Keiji*; Yamauchi, Tomoya*

A new diagnosis method for high energy ions utilizing a single CR-39 detector mounted on plastic plates is demonstrated to identify the presence of the high energy component beyond the CR-39's detection threshold limit. This ion detection method is applied to laser-driven ion acceleration experiments using cluster-gas targets, and ion signals with energies up to 50 MeV per nucleon are identified.